A lecture on the trading and grading of ruby and sapphire, with an emphasis on what collectors should look for.
Lecture • Journey to the Center of the Gem • Bangkok • 27 March 2019
Inside each gemstone lies a hidden world that has been encapsulated for millions of years. Join Billie Hughes for a journey into the inner world of gems, as seen through the microscope.
Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.
Lecture • Journey to the Center of the Gem • Tucson • 6 February 2019
Inside each gemstone lies a hidden world that has been encapsulated for millions of years. Join Billie Hughes for a journey into the inner world of gems, as seen through the microscope.
Lecture • Gem Color Types • Tucson • 4 February 2019
A look at the history of color types such as "pigeon's blood" and the difficulties in standardizing these definitions.
A lecture on the trading and grading of ruby and sapphire, with an emphasis on the fine points of what collectors should look for.
Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.
Lecture • Gem Color Types • Chicago • 13 September 2018
A look at the history of gem color types such as "pigeon's blood" and "padparadscha" and the difficulties in standardizing these definitions.
Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.
As with any field, gemology is littered with dogma. In this presentation, Richard Hughes slays more than a few of these sacred gemological cows.
A look at the important sapphire producing localities in Madagascar, along with the key gemological features that can help separate them from other sapphire sources.
A description of the inclusions found in ruby around the world, including Myanmar, Thailand/Cambodia, Vietnam, Tajikistan, Madagascar and Mozambique.
As with any field, gemology is littered with dogma. In this presentation, Richard Hughes slays more than a few of these sacred gemological cows.